/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import java.io.IOException;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import sessions.AlbumManager;
import sessions.MusicManager;
import sessions.PlaylistManager;

/**
 *
 * @author Antoine Boulinguez et Shyn-Yuan Cheng
 */
public class AjaxUpdateEntitiesServlet extends HttpServlet {
    @EJB
    private AlbumManager albumManager;
    @EJB
    private PlaylistManager playlistManager;
    @EJB
    private MusicManager musicManager;
    
    
    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        // Get target action
        String action = request.getParameter("action");
        
        if("incSongPlayCount".equals(action)) {
            //Get the songID from the request
            //
            String songId = request.getParameter("songId");
            Long songId_long = Long.parseLong(songId);

            if(songId!=null) {
                musicManager.incSongPlayCount(songId_long);
            }
        }
        else if("incPlaylistPlayCount".equals(action)) {
            //Get the songID from the request
            //
            String playlistId = request.getParameter("playlistId");
            Long playlistId_long = Long.parseLong(playlistId);

            if(playlistId!=null) {
                playlistManager.incPlaylistPlayCount(playlistId_long);
            }
        }
        else if("incAlbumPlayCount".equals(action)) {
            //Get the songID from the request
            //
            String albumId = request.getParameter("albumId");
            Long albumId_long = Long.parseLong(albumId);

            if(albumId!=null) {
                albumManager.incAlbumPlayCount(albumId_long);
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
